Knife-sled motion for looms.



No. 636,263. Patented Nov. 7, I899.

' J. KILLABS.

KNIFE SLED MOTION FOR 'LOOMS.

(Application filed Jan. 8, 1899.) (No Model.) 3 Sheets-Sheet l.

jiiiw v mum IN VENTO'R A TTOHNE Y8.

- J. KILLABS.

Paten' ted Noy. 7, I899,

KNIFE SLED MOTION FOR LOOMS.

(No Model.)

(Application filed. Jan. 3, 1899.)

3 Sheets $heet 2,

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ATTORNEYS.

Patented Nov. 7, I899.

J. KILLARS.

KNIFE SLED MOTION FOR LOOMS.

(Application filed. Jan. 8, 1899.) (No Model.) 3 Sheets-Sheet -3IIIJIIII W/TNESSES THE Nunms Pflms 00.. ware-1.1mm, WASHINGTON. n. c.

UNITED STATES ATENT Finns.

JOHN KILLARS, OF STONINGTON, CONNECTICUT.

KNIFE-SLED MOTION FOR LOOMS.

SPECIFICATION formingpart of Letters Patent No. 636,263, dated November7, 1899.

Serial No. 700,875. (No model.)

To aZZ whom it ntaty concern:

Be it known that I, JOHN KILLARS, a citizen of the United States,residing at Stonington, in the county of New London and State ofConnecticut, have invented certain new and useful Improvements inKnife-Sled Motions for Plush and Velvet Looms, of which the following isa specification.

This invention relates to certain impro vements in the knife-sled motionfor plush and velvet looms, for which Letters Patent of the UnitedStates were granted to me heretofore, No. 610,711, dated September 13,1898, and which improvements are designed with the View of imparting tothe knife-sled an easier and steadier motion, so that the even anduniform cutting of the pile is obtained.

' The invention consists in certain improvements in the knife-sledmotion for plush and velvet looms referred to, which will be fullydescribed hereinafter and finally pointed out in the claim.

In the accompanying drawings, Figure 1 represents a sectional frontelevation of a portion of a plush or velvet loom, showing my improvedknife-sled motion. Fig. 2 is a plan View of Fig. 1, and Fig. 3 is a sideelevation of my improved knife-sled motion. 7

Similar letters of reference indicate corresponding parts.

Referring to the drawings, a represents'a crank-shaft which receivesmotion, in the direction indicated by the arrow in Fig. 3, from thedriving-shaft of the plush or velvet loom. The crank-shaft a transmitsrotary motion by a gear-wheel a at its end to a gear-wheel b on a shaftZ), which is located below the crankshaft a and supported like the samein bearings of the supporting-frame F of the loom. The gear-Wheel b hastwice as many teeth as the gear-wheel ct, so that the crank-shaft amakes two rotations to one rotation of the shaft 12. To the opposite endof the shaft 12 is keyed a bevel-wheel c, which meshes with abevel-wheel d, that is keyed to a short shaft e, which is arranged atright angles with the shaft b in suitable bracket-bearings f at theinside of the frame F. The bevel-wheel d has twice the number of teethof the bevelwheel 0. To the opposite end of the shaft 8 is keyed a crankg, and to the end of the crank g is pivoted a connecting-rod h, theopposite end of which is provided with a round hole and pivoted to thewrist-pin of a slotted crank 2', which is keyed to a rock-shaft Zn. Therock-shaft Z0 is supported parallel with the second crank-shaft e inbearings Z, located on the front part of the loom, and in bearings j,located below the crank-shaft 0t, as shown in Fig. 2. Both bearings Zand j of the shaft are supported 011 upright standards Z, attached totransverse braces Z of the main frame F. On the front end of therock-shaft 7c is located a larger gear-wheel m,which meshes with apinion n, that is provided with a comparatively long hub, to which thecord-pulley 0 is applied. The pinion n and the'cord-pulley 0 turn on ashort stationary shaft n, which is supported by the standard Z of thejournalbearings Z. To the cord-pulley 0 are attached and wound inopposite directions two cords 0, by which the knife-sled R is operatedin its guideways p from one side of the loom to the other, according tothe reciprocating motion imparted to the same by the motion-transmittingmechanism described. One of the cords 0 is guided from the cord-pulley 0over pulleys p and p and attached to one end of the knife-sled R, whilethe other cord 0 is guided over the pulleys 19 and p and attached to theopposite end of the knife-sled R, as shown clearly in Figs. 1 and 2.

. During one rotation of the crank-shaft a, which takes place with thefirst pick of the loom, the shaft e makes a quarter of a rotation, orfor everyfour rotations of the crankshaft a the second crank-shaft Z)makes two and the shaft 6 one full rotation,- which corresponds to fourpicks of the shuttle. At the first pick the crank 9 will therefore beturned from the point A of its rotation through an angle of ninetydegrees over the point B to the point C, so that the gear-wheel m, whichis turned by the crank i, is oscillated first for a short distance fromthe left toward the right-i. e., from the point A to A as indicated indotted lines in Fig. 1, and then back again from A to A, by which motionthe cord pulley 0 is turned first from the right toward the left andback again, so that the cords 0, which are attached to the cord-pulley0, are moved by the same over the guide-pulleysp, p p and 19, movingthereby the knife-sled during the first rotation of the crank-shaft afrom point H to the point L and back from L to H. For the secondrotation of the crankshaft (0 the crank g is moved from point C overpointD to point E. During this motion the gear-wheel m is moved from Ato B and the knife-sled from H to I, or across the entire width of theloom, so as to cut the pile. During the third rotation of the crank-axlea the crank g is moved from the point E to the point G and thegear-wheel m from B to B and back again to B, so that the knife-sled ismoved from I to J and back from J to I, while during the fourth rotationof the crankshaft the crank 9 moves from the point G to the point A andthe gear-wheel m from B to A, while the knife-sled is moved from thepoint I to H again along the whole width of the woven fabric, cuttingthe pile again.

My present construction differs from the construction shown in my priorpatent referred to in that the cord-pulley and the mechanism foroscillating the same and reciprocating the knife-sled are not located atone side of the loom, but between the side standards of the same, sothat the driving parts of the knife-sled are better balanced and themomentum of the cord-pulley diminished, whereby the parts receive acomparatively slow motion, while the reciprocating motion of theknife-sled is rendered even, steady,and reliable, so that a uniformcutting action is exerted on the pile and an easier and steadier motionof the loom obtained. Furthermore, by the direct meshing of the maingear-wheel m with the pinion 0n the shaft of the cordpulley theintermediate gear-wheel and pinion used in my former construction aredispensed with and the entire mechanism rendered less complicated. Bylocating the cordpulleyand actuatingearing at some distance across themachine and at the opposite side of the same from the actuating-crank gand its gearing a connecting-rod of greater length than in my formerpatent is obtained. Also by supporting the cord-pulley and itsactuating-gearing on standards supported by transverse braces of theframe and within the frame, instead of at the side and outside of thesame, as in my former patent referred to, the shock or jar on thereversal of the movement of the parts is distributed evenly through theentire loom, instead of unevenly at one side of the same.

Having thus described my invention, I claim as new and desire to secureby Letters Patent The combination, with a knife sled, its guideways andactuating-cord, of a knifesled motion, consisting of a crank-shaft, anintermediate shaft below the crank-shaft, means for rotating theintermediate shaft at one-half the speed of the crank-shaft, a secondcrank-shaft arranged at right angles to the intermediate shaft, abevel-gear transmission between said intermediate shaft and said secondcrank-shaft, at one side of and within the frame, a crank on said secondcrank-shaft, standards supported on-transverse braces of the framewithin and at the side of the same opposite to said bevel-geartransmission, a rock-shaft parallel with the second crankshaft andsupported in bearings in said standards, a crank on said rock-shaft, aconnectingrod between the cranks of the second crankshaft androck-shaft, a gear-wheel on the rockshaft, a cord-pulley supported inbearings of one of said standards, a pinion on the hub of thecord-pulley, and meshing with said gearwheel, and guide-pulleys for theknife-sledactnating cord located at opposite ends of the knife-sledguideways, substantially as set forth.

In testimony that I claimthe foregoing as myinvention I have signedmyname in presence of two subscribing witnesses.

I JOHN KILLARS.

Witnesses:

HENRY G. PALMER, JOHN H. RYAN.

